1.
# sudo apt-get install nfs-kernel-server
# vim /etc/exports
add line
/tftp/smartq7/ 192.168.0.0/255.255.255.0(rw,no_root_squash,no_all_squash)
# sudo /etc/init.d/nfs-kernel-server restart
2.
Have a test on host
# touch /tftp/smrtq7/testfile
# sudo mount 192.168.0.10:/tftp/smartq7 /mnt
# ls /mnt/